Japanese hiking maps

Hello, I would like to buy some hiking maps at amazon.co.jp and I need their exact idetifications.
I intend to do a 3-day hike Sobo-San to Katamuki-San for which The Yama-to-Kogen Chizu 1:60,000 map Sobo-Katamuchi (No 66) is recommended in the Hiking in Japan book. Can you send me please an exact web address for this map at the amazon.co.jp?
Then I would like to visit the Taka-dake area. There is a short trek recommended which visits the Taka-dake itself and the Komi-ike craters. The Hiking in Japan book says that the 1:40,000 map included on the Yama-to-Kogen Chizu sheet Kuju-Aso (No 65) shows the area but not the hike described. They say that there exists a free 1:10,000 Aso Trekking Route Map, which should be available at JR Aso Station. However, the book is already 10 years old. Can you recommend me what map should be used? Thank you very much in advance. Michal

Q1

This guide map[1:50,000] latest.
http://amzn.to/oh2mnD
Sobo[祖母] Katamuki[傾] Mt.[山/-san/-yama]

Q2

Kyushu[九州] is rainy place than Honsyu[本州].
also attacked "Typhoon" destroied the hiking roads usual.

So get latast info cerefully.
send e-mail best to "TIC of Aso/阿蘇".
http://www.asocity-kanko.jp/about/inquiry.html

Thank you very much for the information. Since the postage is many times higher than the map itself, I will probably buy the map as late as during my stay in Fukuoka. Do you think that I can buy the map in Fukuoka without problems?
Thank you!
Regards,
Michal

Hi again.

now that map stock exist all in Fukuoka(3 shops)
by online book stock web "kino-navi[ナビ]".
this is "Kinokuniya-shoten[紀伊國屋書店]" stock search.

博多本店 Hakata-Honten(Hakata Bus terminal)
ゆめタウン博多店 Yumetown-Hakata-ten
久留米店 Kurume^ten(Yumetown-Kurume)
-ten : shop
http://www.kinokuniya.co.jp/en/dsotores.html
→ Kyushu Area

Dear catbus,
thank you very much for your help.
Michal